Entropy-based signal receiver

Details Entropy-based signal receiver Entropy-based signal receiver

1992-06-30

1993-09-21

Sotomayor, John B.

Communications: directive radio wave systems and devices (e.g.,

Transmission through media other than air or free space

342126, G01S 1308, G01V 312, G01V 338

Patent

active

052473023

ABSTRACT:
The entropy-based signal receiver uses the entropy of a received signal or a quantity that is closely related to entropy as the means to measure changes in the signal as a function of time or origin. The changes that are of interest are those associated with either signal level or signal structure. Entropy is a measure that responds in some fashion to either type of change. The entropy-based signal receiver transforms time segments of a received signal into entropy-related quantities. By comparing entropy-related quantities of received signals, one can obtain information about the emitters of the received signals and the nature of the medium through which the signals were propagated. The sensitivity of the entropy-based receiver is significantly better than the more conventional energy-based receiver in detecting the changes in a signal that result from reflection or scattering by inhomogeneities in a wave-propagating medium.

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patent: 5164730 (1992-11-01), Jain
Q. T. Zhang, "An Entropy-Based Receiver for the Detection of Random Signals & Its Application to Radar", Signal Processing 18 (1989) 387-396 Elsevier Science Publishers B.V.

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